A runner runs a distance of 450 metres in a time of 50 seconds. What is his average speed?
1 answer:
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Answer:
Teresa drive <u>90 miles</u> on Tuesday.
Step-by-step explanation:
Given:
Teresa drove on Monday, Tuesday and Wednesday.
On monday her driving distance was 120 miles.
The ratio of Wednesdays distance is 3/5.
The ratio of Wednesdays distance to Tuesday's distance is 5/4.
Now, to find the miles Teresa drive on Tuesday:
Teresa driving distance on Monday was = 120 miles.
Her driving distance on Wednesday is =
Now, her driving distance on Tuesday is:
Therefore, Teresa drive 90 miles on Tuesday.
Answer:
Mean: 15
Median: 15
Mode: 15
Step-by-step explanation:
<h2>Definitions:</h2><u>Mean</u>: It represents the average value of a given data set. The formula for finding the mean of a given set of numbers by taking the quotient of all numbers and the number of values. In other words:
<u>Median:</u> It represents the middle value in a given set of numbers. In order to determine the median, it is essential to arrange the given data either in <em>ascending</em> or <em>descending</em> order (although it is customary to arrange the numbers into ascending order).
- If there is an odd number of values in a given set, then the <u>middle number</u> is the median of that set.
- If a given list comprises of an even number of items, then we must take the <em>average</em> of the two middle numbers.
<u>Mode</u>: It represents the number that <u>occurs most often</u> on a list of items or data.
<h2>Solution:</h2><h3><u>Find the Mean:</u></h3>Using the formula provided in the previous section for finding the mean:
Arrange the given data set in <u><em>ascending order</em></u>:
12, 9, 15, 19, 20, 15 ⇒ 9, 12, <u>15</u>, <u>15</u>, 19, 20
Next, since there is an even number of items on our given data set, we must <u>take the average of the</u><u> two middle numbers</u> (which are 15 and 15):
Therefore, the median is 15.
<h3><u /></h3><h3><u>Find the Mode:</u></h3>As described in the previous section of this post, the mode is the number that occurs most often on our given data. The only repeating number on our list is 15, hence it is the mode.
Therefore, the <em>mean</em>, <em>median</em>, and <em>mode</em> of the given data set is <u>15</u>.